var gdCtrl = new Object();
var goSelectTag = new Array();
var gcGray   = "#808080";
var gcToggle = "#ff9900";
var gcBG = "#edEdE8";
var previousObject = null;

var gdCurDate = new Date();
var giYear = gdCurDate.getFullYear();
var giMonth = gdCurDate.getMonth()+1;
var giDay = gdCurDate.getDate();

function getNowDate()
{
   var nn=new Date();
   year1=nn.getYear();
   mon1=nn.getMonth()+1;
   date1=nn.getDate();
   var monstr1;
   var datestr1
   if(mon1<10) 
    monstr1="0"+mon1;
   else
    monstr1=""+mon1;
     
   if(date1<10) 
     datestr1="0"+date1;
   else
     datestr1=""+date1;
   return year1+"-"+monstr1+"-"+datestr1;
}
function getlastweekDate()
{
   var nn=new Date();
   year1=nn.getYear();
   mon1=nn.getMonth()+1;
   date1=nn.getDate();
   
   var mm=new Date(year1,mon1-1,date1);
   var tmp1=new Date(2000,1,1);
   var tmp2=new Date(2000,1,15);
   var ne=tmp2-tmp1;
   var mm2=new Date();
   mm2.setTime(mm.getTime()-ne);
   
   
   year2=mm2.getYear();
   mon2=mm2.getMonth()+1;
   date2=mm2.getDate();
    
    
     if(mon2<10) 
    monstr2="0"+mon2;
   else
    monstr2=""+mon2;
     
   if(date2<10) 
     datestr2="0"+date2;
   else
     datestr2=""+date2;

   
    return year2+"-"+monstr2+"-"+datestr2;
}

function fSetDate(iYear, iMonth, iDay){
  VicPopCal.style.visibility = "hidden";
  for (i in goSelectTag)
      	goSelectTag[i].style.visibility = "visible";
  goSelectTag.length = 0;
  if ((iYear == 0) && (iMonth == 0) && (iDay == 0)){
      gdCtrl.value = "";
  }else{
      iMonth = iMonth + 100 + "";
      iMonth = iMonth.substring(1);
      iDay   = iDay + 100 + "";
      iDay   = iDay.substring(1);
      if(gdCtrl.tagName == "INPUT"){
            gdCtrl.value = iYear+"-"+iMonth+"-"+iDay;
      }else{
            gdCtrl.innerText = iYear+"-"+iMonth+"-"+iDay;
      }
  }	
  
  window.returnValue=gdCtrl.value;
  //window.close();

}

function fClearValueDate()
{
	gdCtrl.value="";
	window.returnValue=gdCtrl.value;
}

function HiddenDiv()
{
  VicPopCal.style.visibility = "hidden";
  for (i in goSelectTag)
      	goSelectTag[i].style.visibility = "visible";
  goSelectTag.length = 0;

}
function fSetSelected(aCell){
  var iOffset = 0;
  var iYear = parseInt(tbSelYear.value);
  var iMonth = parseInt(tbSelMonth.value);
  

  
  aCell.bgColor = gcBG;
  with (aCell.children["cellText"]){
      var iDay = parseInt(innerText);
/*      if (color==gcGray)
        iOffset = (Victor<10)?-1:1;
*/	
/*** below temp patch by maxiang ***/
/*	if( color == gcGray ){
		iOffset = (iDay < 15 )?1:-1;
	}
*/

	if(flag == "last")
		iOffset = -1;
	if(flag == "next")
		iOffset = 1;
	
    iMonth += iOffset;
    if (iMonth<1) {
        iYear--;
        iMonth = 12;
    }else if (iMonth>12){
        iYear++;
        iMonth = 1;
    }
	
  }
  
  fSetDate(iYear, iMonth, iDay);
}

function Point(iX, iY){
    this.x = iX;
    this.y = iY;
}

function fBuildCal(iYear, iMonth) {
  var aMonth=new Array();
  for(i=1;i<7;i++)
      aMonth[i]=new Array(i);
  
  var dCalDate=new Date(iYear, iMonth-1, 1);
  var iDayOfFirst=dCalDate.getDay();
  var iDaysInMonth=new Date(iYear, iMonth, 0).getDate();
  var iOffsetLast=new Date(iYear, iMonth-1, 0).getDate()-iDayOfFirst+1;
  var iDate = 1;
  var iNext = 1;

  for (d = 0; d < 7; d++)
    aMonth[1][d] = (d<iDayOfFirst)?-(iOffsetLast+d):iDate++;
  for (w = 2; w < 7; w++)
      for (d = 0; d < 7; d++)
        aMonth[w][d] = (iDate<=iDaysInMonth)?iDate++:"n"+(iNext++);
		
  return aMonth;
}

function fDrawCal(iYear, iMonth, iCellHeight, sDateTextSize) {
  var WeekDay = new Array("日","一","二","三","四","五","六");
  var styleTD = " bgcolor='"+gcBG+"' border='0 '  cellspacing='0' valign='center' align='center' height='"+iCellHeight+"' style='font-size:12px; ";

  with (document) {
	write("<tr>");
	for(i=0; i<7; i++)
		write("<td "+styleTD+" color:#990099' >" + WeekDay[i] + "</td>");
	write("</tr>");

  	for (w = 1; w < 7; w++) {
		write("<tr>");
		for (d = 0; d < 7; d++) {
			write("<td id=calCell "+styleTD+"cursor:hand;' onMouseOver='this.bgColor=gcToggle' onMouseOut='this.bgColor=gcBG' onclick='fSetSelected(this)'>");
			write("<font id=cellText flag=''><b> </b></font>");
			write("</td>")
		}
		write("</tr>");
	}
  }
}

function fUpdateCal(iYear, iMonth) {
  myMonth = fBuildCal(iYear, iMonth);

  var patrn = /^n\d{1,}$/;


  var i = 0;
  for (w = 0; w < 6; w++)
	for (d = 0; d < 7; d++)
		with (cellText[(7*w)+d]) {
			Victor = i++;
			if (myMonth[w+1][d]<0) {
				color = gcGray;
				innerText = -myMonth[w+1][d];
				flag = "last";
				
			}else{
				// Modified by maxiang for we need 
				// Saturday displayed in blue font color.
				//color = ((d==0)||(d==6))?"red":"black";
				if( d == 0 ){
					color = "red";
				}else if( d == 6 ){
					color = "blue";
				}else{
					color = "black";
				}
				// End of above maxiang
				if(myMonth[w+1][d] < giDay)
					color = gcGray;

				if(patrn.test(myMonth[w+1][d]))
				{
						
					innerText = myMonth[w+1][d].substring(1,myMonth[w+1][d].length);
					flag = "next";
					//alert(innerText);
				}
				else
				{
					innerText = myMonth[w+1][d];
					flag = "";
				}
				
			}

			
		}

	

}

function fSetYearMon(iYear, iMon){
  tbSelMonth.options[iMon-1].selected = true;
  for (i = 0; i < tbSelYear.length; i++)
    if (tbSelYear.options[i].value == iYear)
        tbSelYear.options[i].selected = true;
  fUpdateCal(iYear, iMon);
}

function fPrevMonth(){
  var iMon = tbSelMonth.value;
  var iYear = tbSelYear.value;
  
  if (--iMon<1) {
      iMon = 12;
      iYear--;
  }
  
  fSetYearMon(iYear, iMon);
}

function fNextMonth(){
  var iMon = tbSelMonth.value;
  var iYear = tbSelYear.value;
  
  if (++iMon>12) {
      iMon = 1;
      iYear++;
  }
  
  fSetYearMon(iYear, iMon);
}


function fGetXY(aTag){
  var oTmp = aTag;
  var pt = new Point(0,0);
  do {
      pt.x += oTmp.offsetLeft;
      pt.y += oTmp.offsetTop;
      oTmp = oTmp.offsetParent;
  } while(oTmp.tagName!="BODY");
  return pt;
}

function fToggleTags(){
  with (document.all.tags("SELECT")){
     for (i=0; i<length; i++)
         if ((item(i).Victor!="LiChao")&&fTagInBound(item(i))){
             item(i).style.visibility = "hidden";
             goSelectTag[i] = item(i);
         }
  }
}

function fTagInBound(aTag){
  with (VicPopCal.style){
      var l = parseInt(left);
      var t = parseInt(top);
      var r = l+parseInt(width);
      var b = t+parseInt(height);
    var ptLT = fGetXY(aTag);
    return !((ptLT.x>r)||(ptLT.x+aTag.offsetWidth<l)||(ptLT.y>b)||(ptLT.y+aTag.offsetHeight<t));
  }
}



// Main: popCtrl is the widget beyond which you want this calendar to appear;
//       dateCtrl is the widget into which you want to put the selected date.
// i.e.: <input type="text" name="dc" style="text-align:center" readonly><INPUT type="button" value="V" onclick="fPopCalendar(dc,dc);return false">
function fPopCalendar(popCtrl, dateCtrl,strDate){
  if (popCtrl == previousObject){
          if (VicPopCal.style.visibility == "visible"){
          HiddenDiv();
          return true;
      }
      
  }
  previousObject = popCtrl;
  gdCtrl = dateCtrl;
  fInitialDate(strDate);
  fSetYearMon(giYear, giMonth); 
  var point = fGetXY(popCtrl);
  with (VicPopCal.style) {
      left = point.x;
    top  = point.y+popCtrl.offsetHeight;
    width = VicPopCal.offsetWidth;
    width = 210; // Added by Danian Zhang/SUI
    height = VicPopCal.offsetHeight;
    fToggleTags();
    visibility = 'visible';
  }
}

// Added by Danian Zhang/SUI
function fInitialDate(strDate){
    if( strDate == null || strDate.length != 10 )
        return false;

    var sYear  = strDate.substring(0,4);
    var sMonth = strDate.substring(5,7);
    var sDay   = strDate.substring(8,10);

    if( sMonth.charAt(0) == '0' ) { sMonth = sMonth.substring(1,2); }
    if( sDay.charAt(0)   == '0' ) { sDay   = sDay.substring(1,2);   }

    var nYear  = parseInt(sYear );
    var nMonth = parseInt(sMonth);
    var nDay   = parseInt(sDay  );
    
    if ( isNaN(nYear ) )    return false;
    if ( isNaN(nMonth) )    return false;
    if ( isNaN(nDay  ) )    return false;

    var arrMon = new Array(12);
    arrMon[ 0] = 31;    arrMon[ 1] = nYear % 4 == 0 ? 29:28;
    arrMon[ 2] = 31;    arrMon[ 3] = 30;
    arrMon[ 4] = 31;    arrMon[ 5] = 30;
    arrMon[ 6] = 31;    arrMon[ 7] = 31;
    arrMon[ 8] = 30;    arrMon[ 9] = 31;
    arrMon[10] = 30;    arrMon[11] = 31;

    if ( nYear  < 1900 || nYear > 2100 )            return false;
    if ( nMonth < 1 || nMonth > 12 )                return false;
    if ( nDay < 1 || nDay > arrMon[nMonth - 1] )    return false;

    giYear  = nYear;
    giMonth = nMonth;
    giDay   = nDay;
    return true;
}

var gMonths = new Array("一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月");

with (document) {
write("<Div id='VicPopCal' style='OVERFLOW:hidden;POSITION:absolute;VISIBILITY:hidden;border:0px ridge;width:100%;height:100%;top:0;left:0;z-index:100;overflow:hidden'>");
write("<table border='0' bgcolor='#6197f0'>");
write("<TR>");
write("<td valign='center' align='center'><input type='button' name='PrevMonth' value='<' style='height:20;width:20;FONT:bold' onClick='fPrevMonth()'>");
write("&nbsp;<SELECT name='tbSelYear' onChange='fUpdateCal(tbSelYear.value, tbSelMonth.value)' Victor='LiChao'>");
for(i=1900;i<2100;i++)
	write("<OPTION value='"+i+"'>"+i+"年</OPTION>");
write("</SELECT>");
write("&nbsp;<select name='tbSelMonth' onChange='fUpdateCal(tbSelYear.value, tbSelMonth.value)' Victor='LiChao'>");
for (i=0; i<12; i++)
	write("<option value='"+(i+1)+"'>"+gMonths[i]+"</option>");
write("</SELECT>");
write("&nbsp;<input type='button' name='PrevMonth' value='>' style='height:20;width:20;FONT:bold' onclick='fNextMonth()'>");
write("</td>");
write("</TR><TR>");
write("<td align='center'>");
write("<DIV style='background-color:#ffffff'><table width='100%' border='0'>");
fDrawCal(giYear, giMonth, 8, '12');
write("</table></DIV>");
write("</td>");
write("</TR><TR><TD align='center'>");
write("<TABLE width='100%'><TR><TD align='center'>");
write("<B ID=\"CAL_B_BLANK\" style='color:"+gcBG+"; visibility:visible; cursor:hand; font-size:12px' onclick='fClearValueDate()' onMouseOver='this.style.color=gcToggle' onMouseOut='this.style.color=gcBG'>清空</B>");
write("</td><td algin='center'>");
write("<B style='color:"+gcBG+";cursor:hand; font-size:12px' onclick='fSetDate(giYear,giMonth,giDay)' onMouseOver='this.style.color=gcToggle' onMouseOut='this.style.color=gcBG'>今天: "+giYear+"-"+giMonth+"-"+giDay+"</B>");
write("</td>");
write("<td algin='center'>");
write("<B ID=\"CAL_B_BLANK\" style='color:"+gcBG+"; visibility:visible; cursor:hand; font-size:12px' onclick='HiddenDiv()' onMouseOver='this.style.color=gcToggle' onMouseOut='this.style.color=gcBG'>关闭</B>");
write("</td>");
write("</tr></table>");
write("</TD></TR>");
write("</TABLE></Div>");
}